/*
 * The MIT License
 *
 * Copyright 2014 David Rodenas Pico.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

package edu.uoc.sd.fr14.model;

import java.text.SimpleDateFormat;
import java.util.Collections;
import java.util.Date;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;

/**
 * This is an auxiliary class to log events.
 * <p>
 * 
 * I should use the logger from java, but I used this because it can be
 * personalized more easily.
 * You can modify it to follow better events if you think that you need.
 * (but nothing of this will be saved)
 * <p>
 * 
 * To use it just do Logger.get("myDebuggableComponent").debug(someId, "message");
 * 
 * @author drodenas
 */
public class Logger {
    
    private static final Set<String> debuggables = Collections.newSetFromMap(new ConcurrentHashMap<String, Boolean>());
    private static final SimpleDateFormat formatter = new SimpleDateFormat("HH:mm:ss.SSS");

    public static void configure(String debuggable, boolean activated) {
        if (activated) debuggables.add(debuggable);
        else           debuggables.remove(debuggable);
    }
    
    private final String debuggable;

    public static Logger get(String debuggable) {
        return new Logger(debuggable);
    }
    
    private Logger(String debuggable) {
        this.debuggable = debuggable;
    }
    
    public void debug(Object context, String message) {
        if (!debuggables.contains(debuggable)) return;
        
        Date date = new Date();
        
        System.out.println("["+formatter.format(date) +"] "+ debuggable + "("+context+"): " + message);
    }
    
}
